Question about 1994 Buick LeSabre
The blend door on the plenum is not closing all the way. Look under the dash or behind the glove box and see if the lever for it moves when you change from heat to cool. Sometime a foreign object falls in the defrost veents and causes this.
Posted on Jan 01, 2013
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Posted on Jan 02, 2017
sounds like the drivers temp door actuator is not working should be located on the drivers side of the air box down by the gas pedal or center dash area.
Posted on Nov 06, 2008
SOURCE: my 1997 buick park avenue
U need to replace the air temperature control blend door actuator motor, this requires removing the dash to access the motor for the blend door.
Posted on Apr 13, 2009
SOURCE: 2003 buick lesabre AC problem
You have to find the motor that controls the blend door and open it manually to find out which one is bad there are 3 blend doors on the HV/AC system one will be where the heater core is. The other will be between the vented air and AC? heating system then the third door will operate vents in dash and defrost condition. If you have someone operate them AC system heating system and watch the blend door motors, the one you find not moving will be the one that has the problem. They have vacuum and electrical motors, if it is a acuum motor you can move the door manually with your hand, if it's electric you will have to disconnect the rod by removing the pinch clip off of the rod.
Posted on Jul 10, 2009
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